Guild Wars 2

When I tried to purchase one of the sale items today, the molten logging axe, I was unable to do so from the promotions tab. I click on the 800, and then purchase button to confirm, and all that happens is that the button flickers and then goes away. There is no confirmation message and no gems removed from my wallet. I had the exact same problem with the mad inventor logging tool, which is why I came back now to get the molten one. I have tried this on two different Macs with the exact same bug occurring. Oddly enough, I was finally able to make the purchase from the main tab from the promotions listed at the bottom, so the issue seems to be related to the formatting of the promotions tab.

Max OS X 10.11.4; iMac 27 Retina; 4GHz; 8GB ram; Radeon R9 M395X w/4GB VRAM